Improper Check or Handling of Exceptional Conditions in Linux kernel - CVE-2026-31542
Published: April 25, 2026
Vulnerability identifier: #VU127850
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2026-31542
CWE-ID: CWE-703
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vendor: Linux Foundation
Affected software:
Linux kernel
Linux kernel
Detailed vulnerability description
The vulnerability allows a local user to cause a denial of service.
The vulnerability exists due to improper handling of deconfigured sockets in UV hub info structure allocation when allocating UV hub info structures for a socket mapped to SOCK_EMPTY. A local user can trigger allocation in this state to cause a denial of service.
How to mitigate CVE-2026-31542
Install security update from vendor's repository.
Sources
- https://git.kernel.org/stable/c/1f6aa5bbf1d0f81a8a2aafc16136e7dd9a609ff3
- https://git.kernel.org/stable/c/79f0faf81d3bbbe5f07bf6892450d3740a1b290d
- https://git.kernel.org/stable/c/9956d4892e78812246336c7ea51f5aa62018049e
- https://git.kernel.org/stable/c/c1cf2218d2fa40a49921a7460981e5faab26f04e
- https://git.kernel.org/stable/c/c51957601d32c0d195bce0b9345dfe93ef5728cc